Grotiusomyia reticulata, Hansson, 2023

Hansson, Christer, 2023, Review of Grotiusomyia Girault (Chalcidoidea: Eulophidae), an exclusively New World genus, including 17 new species, Zootaxa 5278 (1), pp. 39-77 : 57-58

Grotiusomyia reticulata sp. nov.

Figs 16 , 41, 42 , 62 , 69 , 91 , 108

Diagnosis. Female: mandibles yellowish-brown with a row of small teeth at apex (as in Fig. 112 ); flagellum brown, 1.3× as long as width of mesoscutum, F4 1.3× as long as wide, apex of clava pointed ( Figs 16 , 62 ); vertex with weak reticulation ( Fig. 91 ); occipital margin with a sharp carina throughout ( Fig. 91 ); mesoscutum and mesoscutellum with same colour and reticulation ( Fig. 41 ); mesoscutellum convex; dorsellum flat, smooth and shiny, medio-posterior part slightly protruding with small dents; fore wing with 2–4 setae in apico-dorsal part of costal cell, completely hyaline ( Fig. 16 ); fore coxa white, mid coxa pale brown ( Fig. 16 ); gaster ( Fig. 41 ) 1.7× as long as wide with apex pointed; Gt 1 0.4× as long as length of gaster, dorsal surface reticulate with anterior ¼ smooth, meshes elongate, posterior margin curved forwards; Gt 6 0.1× as long as length of gaster with anterior part 1.5× as wide as width of posterior part, posterior margin straight with sharp edge. Male: gaster entirely dark brown, reticulation on Gt 1 weak and superficial, or without reticulation ( Fig. 42 ).

Description (female holotype). Length 1.4 mm. Frons with strong reticulation, scrobes smooth. Vertex with weak reticulation. Mandibles with a row of small teeth at apex. Occipital margin with a sharp carina throughout. Dorsellum ±flat, smooth and shiny, medio-posterior part slightly protruding with small dents. Propodeal callus with eight setae. Fore wing with six setae on dorsal surface of submarginal vein; with 12 admarginal setae; costal cell with 11 setae on ventral surface, in one row, apico-dorsal margin with two setae; speculum small and closed below. Gaster long ovate with pointed apex; Gt 1 reticulate with anterior ¼ smooth, remaining tergites with weak reticulation; Gt 1 with posterior margin curved forwards, Gt 6 with posterior margin straight.

Colour. Head metallic bluish-green, scrobes and part inside ocellar triangle black with metallic tinges. Mandibles yellowish-brown. Antennae with scape and pedicel yellowish-brown, flagellum brown. Mesosoma black with metallic greenish tinges. Legs with fore coxa white, mid coxa pale brown, hind coxa black with metallic tinges; trochanters yellowish-white; femora, tibiae and tarsi yellowish-brown. Gaster with Gt 1 with smooth parts metallic bluish and reticulate parts dark brown with metallic tinges, remaining tergites dark brown with metallic tinges.

Relative measurements: head length, dorsal view 18; head length, frontal view 26; head width 36; POL 7.5; OOL 3.5; mouth width 9; malar space 4.5; eye length 21; lateral ocellus diameter 3.5; scape length 14; scape width 3; pedicel length 5.5; pedicel width. dorsal view 3; flagellum length 35; F1 length 6.5; F1 width 3; F2 length 6; F2 width 3.5; F3 length 6; F3 width 4; F4 length 5; F4 width 4; clava length 9.5; clava width 4; pronotum length 13; pronotum width 22; mesosoma length 46; mesosoma width 28; midlobe of mesoscutum length 16; mesoscutellum length 16; mesoscutellum width 14.5; propodeum length 10; hind tibia length 31; hind tibial spur1 length 5.5; hind tibial spur2 length 2.5; hind tarsus length 25; hind basitarsus length 7.5; fore wing length 84; fore wing width 37; costal cell length 24; costal cell width 1.5; marginal vein length 25; postmarginal vein length 11; stigmal vein length 7.5; Gt 1 length 22; Gt 6 length 5.5; Gt 6 width at base 15; Gt 6 width at apex 10; gaster length 55; gaster width 32.

Variation. Length of body 1.2–1.7 mm. Costal cell with 2–4 setae in apico-dorsal part. Propodeal callus with 6–8 setae.

Male. Length 0.9–1.3 mm. Fore coxa white to pale brown. Reticulation on Gt 1 weak and superficial, or missing. Otherwise as in female.

Relative measurements: head length, dorsal view 13; head width 27.5; eye length 15; scape length 11; scape width 2.5; flagellum length 34; F1 length 6.5; F1 width 3.5; F2 length 5.5; F2 width 3.5; F3 length 5.5; F3 width 3.5; F4 length 5.5; F4 width 4; clava length 10; clava width 3.5; Gt 1 length 13.5; gaster length 36; gaster width 20.

Distribution. Costa Rica.

Etymology. Name referring to reticulate first gastral tergite.

Material. Holotype female: COSTA RICA, Guanacaste, Parque Nacional Santa Rosa, 300,.SE-8-C, 8.ii-2.iii.1986, D.H. Janzen & I.D. Gauld ( NHMUK) . Paratypes (34♀ 21♁, CNC, MZLU, MZUCR, NHMUK): 1♀ with same label data as holotype ; following from same locality as holotype but collected 13.vii-3.viii.1985 (1♀), 3-24.viii.1985 (3♁), 5-26.x.1985 (1♀ 4♁), 26.x-16.xi.1985 (1♀ 2♁), 16.xi-7.xii.1985 (1♀), 7-28.xii.1985 (2♀ 1♁), 18.i-8.ii.1986 (1♀), 8.ii-2.iii.1986 (1♁), 2-23.iii.1986 (3♀ 2♁), 23.iii-13.iv.1986 (5♀ 3♁), 13.iv-4.v.1986 (5♀), 14.viii-6.ix.1986 (2♀), 27.ix-18.x.1986 (1♁), 21.ii-4.iii.1987 (4♀ 1♁), 14.iii-4.iv.1987 (2♀), 4-25.iv.1987 (2♀), 25.iv-16.v.1987 (1♁), 16.v-6.vi.1987 (2♁) ; 1♀ COSTA RICA, Guanacaste, Bagaces, Parque Nacional Palo Verde , Sector Catalina , Fila Catalina , LN 257400_400000, 250m, 11.x.-9.xi.1999, I. Jiménez. Barcoded specimens (2♀) : 1♀ COSTA RICA, Guanacaste, Area de Conservacion Guanacaste , Sector Pailas, Pailas Dos PL12-3, 10.7631°N 85.3344°W , 820m, 16-23.vi.2016, D. Janzen, W. Hallwachs ( BIOUG 49968 - E 04) ; 1♀ COSTA RICA, Guanacaste, Area de Conservacion Guanacaste, Sector Pailas, Pailas, Dos PL12-3 , 10.7631°N 85.3344°W, 820m, 06-13.viii.2015, D. Janzen, W. Hallwachs ( BIOUG 52666 - G 03).

Figures

FIGURES 13–18. Grotiusomyia spp. nov., body in lateral view, females; 13 G. noyesi, paratype; 14 G. phalaros, paratype; 15 G. pilosa, paratype; 16 G. reticulata, paratype; 17 G. septentrionalis, holotype; 18 G. rubii, holotype.

FIGURES 37–43. Grotiusomyia spp. nov.; 37–42. Body in dorsal view; 37–38. G. phalaros; 37 female holotype; 38 male paratype; 39–40. G. pilosa; 39 female paratype; 40 male paratype; 41–42. G. reticulata; 41 female paratype; 42 male paratype; 43 G. pilosa, dorsellum+propodeum in dorsal view, female paratype.

FIGURES 58–64. Grotiusomyia spp. nov., head+antenna in lateral view; 58 G. hansoni, female holotype; 59 G. lascrucensis, female holotype; 60 G. leucaena, female holotype; 61 G. nicoyae, female holotype; 62 G. reticulata, female paratype; 63–64. G. noyesi; 63 female paratype; 64 male paratype.

FIGURES 65–70. Grotiusomyia spp. nov., head+antenna in lateral view; 65–66. G. phalaros; 65 female holotype; 66 male paratype; 67–68. G. pilosa; 67 male paratype; 68 female paratype; 69 G. reticulata, male paratype; 70 G. rubii, female holotype.

FIGURES 84–91. Grotiusomyia spp. nov., vertex, females; 84 G. jimenezi, holotype; 85 G. lascrucensis, holotype; 86 G. leucaena, paratype; 87 G. nicoyae, holotype; 88 G. noyesi, holotype; 89 G. phalaros, holotype; 90 G. pilosa, holotype; 91 G. reticulata, holotype.

FIGURES 103–112. Grotiusomyia spp. nov., females; 103–110. Head in frontal view; 103 G. leucaena, paratype; 104 G. nicoyae, paratype; 105 G. noyesi, holotype; 106 G. phalaros, paratype; 107 G. pilosa, paratype; 108 G. reticulata, paratype; 109 G. rubii, holotype; 110 G. septentrionalis, paratype; 111–112. Mandibles; 111 G. phalaros, paratype; 112 G. lascrucensis, holotype.